Also you guys calling psychics scammers and so on is illegal. It's libel and slanderous.
The internet has laws now.
I don't know why or what you are all going on about, but factually these statements are incorrect.
Without going into a 20 page explanation, libel and slander are common law torts (except in Louisiana, which practices Napoleonic Code rather than law through precedent). Tort actions are brought by private citizens in civil actions. Something being "illegal" implies against the law, as in criminal. Both the federal government and each state has the ability to prosecute criminal matters. In other words, libel and slander are not "illegal".
The free speech provisions of the First Amendment have made most internet censorship a no go. That's not to say that you can't break an actual law online and not be prosecuted. Try posting a ton of kiddie porn and see what happens. The fact is that anyone can sue anyone at any time for anything. It doesn't mean they have a real case or will win. Meeting all the elements of slander or libel is not very easy and is not a pro se matter. Representation in either or both would be cost prohibitive to most people.